2. An atom of Be has four protons, five neutrons and four electrons. What 10 poin is the mas of Be? *
O a.4
b. 5
c. 1
09

Draw two cyclic constitutional isomers of cis-1

Calculate the concentration of all species in a 0.165 m solution of h2co3.

The solubility of barium nitrate is 9.02 g/100 g h2o at 20°c. a 15.2 g sample of barium nitrate is added to 200.0 g of water at 20°c. is the solution saturated, unsaturated, or supersaturated? a. unsaturated b. saturated c. supersaturated